US7226547B2ExpiredUtilityA1
Electroluminescent phosphor powders, methods for making phosphor powders and devices incorporating same
Est. expiryFeb 24, 2017(expired)· nominal 20-yr term from priority
Inventors:Mark J. Hampden-SmithToivo T. KodasJames CarusoQuint H. PowellKlaus KunzeDaniel J. Skamser
H10P 52/403H10W 70/666C09K 11/7741C09K 11/0805C09K 11/0877C09K 11/584C09K 11/671C09K 11/612C09K 11/562C09K 11/625C09K 11/567H01J 29/085B01J 2/02B01J 2/003C09K 11/7746C09K 11/7797G21K 2004/06C01P 2002/70H01J 2211/42C09K 11/7787C09K 11/7786C09K 11/7776C09K 11/7769C09K 11/7729C09K 11/7708C09K 11/7701C09K 11/672C09K 11/666C09K 11/662C09K 11/644C09K 11/643C09K 11/642C09K 11/595C09K 11/565C09K 3/1436C01P 2004/34B24B 37/044B01J 2219/00186B01J 2219/00171B01J 2219/00166B01J 2219/00162B01J 2219/00155B01J 2219/00112B01J 13/02G21K 4/00B01J 19/2405C09K 11/7789C09K 11/7731C09K 11/7718C01P 2004/80H01J 29/20C09K 11/7784C09K 11/7771C01P 2006/80C01P 2006/60C01P 2006/22C01P 2006/10C01P 2004/50C01P 2004/32C01G 23/003C01G 15/006C01B 17/20C01B 13/185B01J 19/10C01P 2002/60C01G 25/00C01B 13/18C09K 11/623C09K 11/025H05B 33/20C01P 2004/52B01J 2/04H05B 33/14C09G 1/02H01G 4/0085B01J 2219/00159C09K 11/08C01P 2004/62C01P 2004/61C09K 3/1463C01B 33/20B01J 2/006C01P 2004/03B82Y 30/00C01G 23/006Y10T428/2982Y10T428/2991
84
PatentIndex Score
6
Cited by
14
References
12
Claims
Abstract
Electroluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The method of the invention advantageously permits the economic production of such powders. The invention also relates to improved devices, such as electroluminescent display devices, incorporating the phosphor powders.
Claims
exact text as granted — not AI-modified1. A phosphor powder batch comprising composite phosphor particles containing at least a first phase and at least a second phase dispersed within said first phase, wherein one of said phases is an electroluminescent phosphor and wherein said composite particle average size is between 0.1 and 10 microns.
2. The phosphor powder batch of claim 1 wherein the average particle size is from about 0.1 to 5 microns.
3. The phosphor powder batch of claim 1 wherein one of said phases is inorganic.
4. The phosphor powder batch of claim 1 wherein one of said phases is a metal oxide.
5. The phosphor powder batch of claim 1 wherein one of said phases is a metal sulfide.
6. The phosphor powder batch of claim 1 wherein the composite particles have substantially spherical morphology.
7. The phosphor powder batch of claim 1 wherein the crystallite size of one of said phases is at least 25 nm.
8. The phosphor powder batch of claim 1 wherein said first phase is uniformly distributed through said second phase and said second phase is a phosphor.
9. The phosphor powder batch of claim 1 wherein at least 80% of said composite particles are within twice the average size.
10. The phosphor powder batch of claim 1 wherein both phases are phosphor compounds.
11. An ink comprising the particles recited in claim 1 .
12. An ink-jet ink comprising the particles recited in claim 1 .Cited by (0)
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